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Margaret [11]
3 years ago
15

An ice cute at 0.0*C was dropped into 30.0 g of water in a

Chemistry
1 answer:
PilotLPTM [1.2K]3 years ago
5 0

<u>Answer:</u> The mass of ice cube is 77.90 grams

<u>Explanation:</u>

When ice is mixed with water, the amount of heat released by ice will be equal to the amount of heat absorbed by water.

Heat_{\text{absorbed}}=Heat_{\text{released}}

The equation used to calculate heat released or absorbed follows:

Q=m\times c\times \Delta T=m\times c\times (T_{final}-T_{initial})

m_1\times c_1\times (T_{final}-T_1)=-[m_2\times c_2\times (T_{final}-T_2)]       ......(1)

where,

m_1 = mass of ice = ? g

m_2 = mass of water = 30.0 g

T_{final} = final temperature = 19.5°C

T_1 = initial temperature of ice = 0.0°C

T_2 = initial temperature of water = 45.0°C

c_1 = specific heat of ice = 2.108  J/g°C

c_2 = specific heat of water = 4.186 J/g°C

Putting values in equation 1, we get:

m_1\times 2.108\times (19.5-0)=-[30.0\times 4.186\times (19.5-45.0)]

m_1=77.90g

Hence, the mass of ice cube is 77.90 grams

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Explanation:

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From the balanced equation above,

4 moles of NH₃ reacted to produce 4 moles of NO.

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Mass of NO = 11.9 g

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